WIX 51051 vs NAPA Gold 1051: Oil Filter Compatibility
Compare WIX 51051 and NAPA Gold 1051 oil filters by compatibility, dimensions, thread size, gasket fit, bypass valve, anti-drainback valve status, and match confidence. Use this comparison as a fitment review, not as an automatic substitution guarantee. Both use a 5/8-18 thread.
Quick verdict
COMPATIBLEMatch score: 78.6
Bypass presence unknown on one or both filters · ADBV unknown on one or both filters
- Thread size is the first hard-fit check for any comparison of spin-on filters.
- Gasket OD and gasket ID are the most important seal-related dimensions.
- Height differences can matter for clearance even when thread and gasket fit appear close.
- Bypass and anti-drainback differences may be important, depending on the application.
WIX 51051 and NAPA Gold 1051 specifications
How matching is scored| Specification | WIX 51051 | NAPA Gold 1051 |
|---|---|---|
| Thread size | 5/8-18 | 5/8-18 |
| Gasket OD | 71.98 mm | 70.1 mm |
| Gasket ID | 62.53 mm | 62.5 mm |
| Can OD | 92.96 mm | 92.96 mm |
| Height | 110.2 mm | 110.2 mm |
| Internal bypass valve | Yes | Unknown |
| Bypass PSID | 8 - 11 | Unknown |
| Anti-drainback valve | Yes | Unknown |
What matters in this specific comparison
Thread size matches: both are 5/8-18.
Gasket OD differs by 1.9 mm (WIX 51051: 71.98 mm, NAPA Gold 1051: 70.1 mm).
Gasket ID is identical at 62.53 mm.
Height is identical at 110.2 mm.
Can OD is identical at 92.96 mm.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.